101685001685 has 4 divisors (see below), whose sum is σ = 122022002028. Its totient is φ = 81348001344.

The previous prime is 101685001673. The next prime is 101685001699. The reversal of 101685001685 is 586100586101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20775474769 + 80909526916 = 144137^2 + 284446^2 .

It is a cyclic number.

It is not a de Polignac number, because 101685001685 - 2²² = 101680807381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10168500164 + ... + 10168500173.

It is an arithmetic number, because the mean of its divisors is an integer number (30505500507).

Almost surely, 2^101685001685 is an apocalyptic number.

It is an amenable number.

101685001685 is a deficient number, since it is larger than the sum of its proper divisors (20337000343).

101685001685 is an equidigital number, since it uses as much as digits as its factorization.

101685001685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20337000342.

The product of its (nonzero) digits is 57600, while the sum is 41.

Adding to 101685001685 its reverse (586100586101), we get a palindrome (687785587786).

The spelling of 101685001685 in words is "one hundred one billion, six hundred eighty-five million, one thousand, six hundred eighty-five".